Fixed Cash ISA Account

Fixed Cash ISA: Your Path to Tax-Free Savings

Looking for a secure, tax-free way to grow your money? Our Fixed Cash ISA provides a guaranteed return of 4% AER for the 2024/25 tax year, making it the ideal choice for maximising your savings.

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What is a Fixed Cash ISA?

A Fixed Cash ISA is a smart and straightforward way to save money while enjoying tax-free benefits. With this type of account, you secure a fixed interest rate for a set period. This makes it an excellent choice if you want steady, predictable growth for your savings.

Any interest you earn stays completely tax-free. This means more of your money works for you, helping you reach your financial goals faster. Plus, the fixed interest rate gives you peace of mind, as you’ll know exactly how much your savings will grow over time.

Why choose our Fixed Cash ISA account?

The benefits of our Fixed Cash ISA account is clear for all to see:

Start Saving from £5

Open your Fixed Cash ISA with a lump sum deposit starting as low as £5, up to the annual allowance of £20,000.

Secure & Tax-Free Returns

Enjoy 4% AER interest, paid at the end of the tax year, completely tax-free!

Peace of Mind with FSCS Protection

Rest assured, your savings are safe. Deposits are protected up to £85,000 under the UK’s Financial Services Compensation Scheme (FSCS).

Easily Transfer Existing ISAs

Already have a Cash ISA? Transfer your existing savings (up to your 2024/25 allowance of £20,000) into your Fixed Cash ISA effortlessly.

Added Protection with Free Life Cover

We match the first £25,000 saved if the worst should happen, ensuring your loved ones are supported when they need it most (subject to terms and conditions).

A woman writing at a desk while reviewing details about a Fixed Cash ISA, focusing on saving options.
A woman writing at a desk while reviewing details about a Fixed Cash ISA, focusing on saving options.
A woman writing at a desk while reviewing details about a Fixed Cash ISA, focusing on saving options.

How our Fixed Cash ISA account works

Our savings accounts are easy to manage. Fixed Cash ISA account holders can enjoy the simplest of processes:

Step 1

Apply Online

Our quick and easy application takes just minutes to complete. If you’re not a member, simply join us first—it’s fast and free.

Step 2

Fund Your Account

Deposit funds directly or transfer an existing Cash ISA. We’ll provide all the details to help you get started.

Step 3

Grow Your Savings

Earn tax-free interest, paid annually on 5th April 2025, helping you make the most of your investment.

Frequently Asked Questions

To be eligible to open a Fixed Cash ISA, you must be:

  • at least 16 years old 
  • a UK tax resident or work as a Crown employee serving overseas and paid out of the public revenue of the UK — typically a serving member of the armed forces or a diplomat, if they are not resident in the UK
  • be married to, or in a civil partnership with, an eligible person, and
  • be a member of Serve and Protect Credit Union

If you are not already a member, don’t worry! You can join for free here!

You can start with a minimum of £5 and save up to £20,000 within the annual allowance. Additional contributions must adhere to ISA regulations.

Yes, but early withdrawals will close your account and incur a 60-day interest penalty. This ensures that you remain committed to your goals while still offering flexibility.

Absolutely. Your savings are protected up to £85,000 under the FSCS.

Yes, we accept transfers up to the £20,000 allowance and subscription limit for the 2024/25 tax year. Transferring is simple and hassle-free.

To open a Fixed Cash ISA account, you’ll need to become a member of our credit union and save a minimum of £10 per month in our Regular Saver account.

Don’t worry if you’re not a member yet – you can become a member for free here.

The current tax year ISA allowance (6 April 2024 to 5 April 2025) is £20,000.

You can split your annual ISA allowance across the different ISA types – Cash ISA, Stocks and Shares ISA, Innovative Finance ISA and Lifetime ISA – or save the whole allowance in one type of ISA (apart from the Lifetime ISA, which has a limit of £4,000).

Serve and Protect Credit Union offer a Fixed Cash ISA only. This will be classed as one Fixed Cash ISA for the purposes of tax-free allowances and HMRC reporting.

If you’ve got existing ISAs with other providers from previous tax years, these don’t count towards your £20,000 annual allowance.

When your 2024/25 Fixed Cash ISA matures, and after the interest is paid, the balance will remain in the Fixed Cash ISA and then revert to our standard annual Fixed Cash ISA rate thereafter.

Alternatively, you may wish to transfer your money to another available Serve and Protect Credit Union account or withdraw it to another account.

All our savings accounts include free life cover up to £25,000 (up to the age of 65). This means, should the worst happen, your savings could be doubled up to the first £25,000, allowing you to support your family when they need it most. 

The free life cover benefit is subject to the terms and conditions of Serve and Protect Loan Protection and Life Savings policies, arranged by CMGL and underwritten by Covea Life Ltd. Note that this protection is a benefit of membership provided at no extra cost to the member. The Credit Union is the policyholder for

  • Interest is paid gross without the deduction of income tax and doesn’t count towards your Personal Savings Allowance.
  • If you change your mind within 14 days of opening your account, we will cancel your account without penalty or notice.
  • You can request to transfer in ISAs held with other providers at account opening stage only. 
  • *AER stands for annual equivalent rates and illustrates the interest rates if it was paid and compounded once each year.
  • Your annual ISA allowance for the 2024/2025 tax year is £20,000. You can split the allowance across the different ISA types – cash ISA, stocks and shares ISA, innovative finance ISA and Lifetime ISA – or save the whole allowance in one type of ISA (apart from the Lifetime ISA, which has a limit of £4,000). We only provide a Fixed Cash ISA.
  • You can make deposits up to £20,000 from your nominated UK bank or building society account. You can also transfer existing ISAs from other providers into this account, up to the current ISA allowance limit for the tax year.
  • We reserve the right to withdraw this account at any time.

Ready to Apply?

If you’re already a member, our Fixed Cash ISA account is just the thing for you. Just fill out the form below to get started. It’s that simple! 

Fixed Cash ISA Rates

Below, you’ll find an archive of the Fixed Cash ISA rates we’ve paid, allowing you to easily track what was provided and when.

Tax yearEffective periodAER (Annual Equavalent Rate)
2024/202506.04.2024 - 05.04.20254.00%

Standard ISA Rate – Our Standard ISA rate is currently 1%. This is the rate you will receive on any Cash ISAs held with us from previous tax years.

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